Astrophysics · Physics & Astronomy
High Energy Astrophysical Phenomena
The newest papers in High Energy Astrophysical Phenomena that ReadSearch has read, newest first. Each links to its own page, with its authors, date, where it was published and the original.
189 papers, from 21 September 2026 to 5 November 2026: 189 arXiv preprints.
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Newest papers, page 5
ExHaLe-jet: Modeling blazar jets with an extended hadro-leptonic radiation code
Blazars - active galaxies with the jet pointing at Earth - emit across all electromagnetic wavelengths.Clustering of JWST LRDs. Implications for PBHs and other early-forming seeds
We use the observed abundance and spatial clustering of JWST little red dots (LRDs) over z = 4--8 to confront two formation scenarios: the standard picture in which LRDs form in virialized…The evolution of 3C 306 in the galaxy cluster RXCJ1454.4+1622: linking spectral ageing, ICM conditions, and jet dynamics through MHD simulations
We present a methodology for analysing radio sources in galaxy clusters by combining multi-frequency radio observations, X-ray analysis of the intracluster medium (ICM), and three-dimensional…Modeling Multi-band Active Galactic Nuclei Lightcurves Using an Self-supervised Attentive Neural Process Network
With the the Legacy Survey of Space and Time (LSST), observations of tens of millions of quasars are expected.Detecting and Identifying Supernovae in AGN Accretion Disks
Stars may become embedded in active galactic nucleus (AGN) accretion disks and eventually explode as supernovae (SNe), whose detection would provide direct evidence for the existence and evolution…Black Hole Binary Mergers in Galactic Nuclei: Combined Effects of Secular Dynamics and Stellar Flybys
Galactic nuclei, with the central supermassive black holes (SMBHs) and surrounding dense star clusters, serve as natural laboratories for studying gravitational dynamics in extreme gravitational…A Parsec-Scale Transient High-Frequency-Peaked Radio Source in the Very Large Array Sky Survey Brightening and Fading over a Decadal Timescale
A subset of active galactic nuclei (AGN) manifests as compact radio sources with peaked radio spectra, commonly referred to as peaked-spectrum (PS) sources.Can bosenovae deplete the galactic dark matter?
No: neither through the bosenovae of gravitational atoms formed around stars and compact objects, nor through those of boson stars formed in the galactic dark-matter halo.The impact of nonlinear Landau damping on cosmic ray streaming and the role of external turbulence
Cosmic rays (CRs) streaming faster than the Alfvén speed generate Alfvén waves that scatter them.The Impact of High-Mass Clusters on the Binary Black Hole Merger Rate over Cosmic Time
We present a cosmological calculation of the binary black hole merger rate from dense star clusters, using a $\texttt{Cluster Monte Carlo}$ ($\texttt{CMC}$) model grid spanning the full observed…How Little Red Dots Turn Blue: Evolution of Kelvin-Helmholtz Contracting Black Hole Envelopes and Observational Diagnostics
James Webb Space Telescope (JWST) observations have revealed compact, red-colored, broad-line emitters known as little red dots (LRDs), while a bluer counterpart population has been referred to as…Probing ordered magnetic fields in galaxies across cosmic time
Magnetic fields are dynamically important across many astronomical environments, yet their origin, strength, and evolution over cosmic time remain poorly understood.Wandering intermediate-mass black holes and off-nuclear tidal disruption events from early star clusters
Off-nuclear tidal disruption events (TDEs) reveal evidence for massive black holes outside galactic centers, but the origins of this wandering population remain uncertain.JWST reveals a highly ionized nebula powered by an ultraluminous X-ray source with a massive black hole in the metal-poor galaxy Holmberg II
Recent James Webb Space Telescope (JWST) observations have revealed fine-structure lines of ions with ionization potentials ${\gtrsim}50$\,eV, such as [Ne\,{\sc v}] and [O\,{\sc iv}], in nebular…IC 1297: The Most Distant Known X-ray Planetary Nebula and One of the Most Luminous
We present the first targeted Einstein Probe (EP) X-ray observations of any planetary nebula (PN).Low-frequency spectra and scattering of pulsars towards the Gum Nebula with the MWA
The Gum Nebula is a nearby ionised complex with sight-line-dependent pulsar propagation.Delving into the depths of NGC 3783 with XRISM VI. Evidence for a failed wind based on Fe xxv absorption line variability
NGC 3783 exhibits a prominent Fe XXV absorption trough in the time-averaged XRISM/Resolve spectrum.Broadband non-thermal emission predictions based on 3D simulations of supernova explosions within active galactic nuclei jets
Thermonuclear and core-collapse supernovae are statistically expected to happen within extragalactic jets, as these jets cross the inner regions of their host galaxies, and supernova ejecta-jet…Black hole spin-mass correlation and accretion disks at birth stage of dense star clusters
We review the accretion-driven channel of stellar black-hole growth and spin-up in gaseous star clusters, developed within the framework of our MSCA project "protoBH".The ePESSTO+ census of ZTF nuclear transients. I. What flares in galactic nuclei?
Transients in galactic nuclei arise from distinct processes, only some of which trace the supermassive black hole (SMBH).